You can get a scope mounted on the gun. But if your going to do that your probably going to need to pick up a slug barrel. The standard barrel on the BPS is more of an all around barrel. You can shot buckshot at deer, bird shot, non sabot slugs and such out of it as it is and you really dont need a scope. But if you want to extend your range you then you need to purchase the rifled barrel and buy the scope and scope mounts.

This is the rifled barrel. 12ga 3" 22 inch $388

http://www.browning.com/products/catalog/firearms/detail.asp?value=016B&cat_id=111&type_id=2 14

hope this helps